An ear-trumpet is an artificial instrument formerly used for aiding the collection of the vibrations or waves of sound, and carrying them in an intensified form to the internal parts of the ear. They were generally made of tin, vulcanite, gutta-percha, etc, and were of various forms. A small kind known as ear-cornets or acousticauricles, attached to the ear by a spring, were sometimes used in slight cases of deafness. Research Ear-Trumpet
A speaking trumpet (ear-trumpet) was an instrument formerly used prior to the invention of the electronic hearing-aid for concentrating and magnifying the sound waves of the human voice. The speaking trumpet was probably invented by Sir Samuel Morland during the 17th century. At one time speaking trumpets were widely used on board ships, but by the early 20th century was replaced on ships by other means of communication. Research Speaking Trumpet
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Abbreviations
Research Ear-Trumpet
